Thomas P. Moran Eric Saund William van Melle Anuj Gujar Kenneth P. Fishkin Beverly L. Harrison Design and Technology for Collaborage: Collaborative Collages of Information on Physical Walls. 197-206 1999 ACM Symposium on User Interface Software and Technology http://doi.acm.org/10.1145/320719.322602 db/conf/uist/uist1999.html#MoranSMGFH99